import book.BookList;
import user.AdminUser;
import user.NormalUser;
import user.User;

import java.util.Scanner;

public class Main {

    //可以利用返回值的向上转型达到发挥的一致性
    public static User login() {
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入你的姓名");
        String name = scanner.nextLine();
        System.out.println("请输入你的身份：1-》管理员  0-》普通用户");
        int choice = scanner.nextInt();
        if(choice == 1) {
            /*AdminUser adminUser = new AdminUser(name);
            return adminUser;*/
            return new AdminUser(name);
        }else {
            /*NormalUser normalUser = new NormalUser(name);
            return normalUser;*/
            return new NormalUser(name);
        }
    }
    public static void main(String[] args) {
        BookList bookList = new BookList();
        //通过user和ret就能确定操作是哪个对象(普通用户或者管理员)的哪个方法
        User user = login();
        while(true) {
            int choice = user.menu();
            user.doOperation(choice, bookList);
        }
    }
}
